JPH09178323A - Refrigerator-freezer type warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a cooling efficiency by a method wherein a wall structure of a warehouse is formed into a double-walled structure, an air passage is formed within the wall structure and an inner space of the warehouse is cooled under double coolings by air flowing from an air blowing-out port and by a radiation cooling performed from the inner wall surface. SOLUTION: Refrigerant cooled by a freezer 34 is circulated within a refrigerant pipe 35 and sent to a cooling device 36. Then, air passed from a warehouse space 26 through an air suction port 32 and returned back to it is heat exchanged to become cooling air. The cooling air flows in a wall 14, i.e., between an outer wall 16 and an inner wall 18 and flows under a uniform and fine minute air speed in the warehouse space 26 of the main body 10 through an air blowing-out port 28 having deflectors 30. During this operation, cooling air is circulated between the outer wall 16 and the inner wall 18 of the main body 10 so as to attain a radiation cooling for the warehouse space 26 and prevention of entering of heat into the main body 10. In addition, it is possible to improve a cooling efficiency through circulation of cooling air into the warehouse space 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freezing / refrigerating warehouse for freezing or refrigerating stored products such as fruits and vegetables such as vegetables and fruits and fish.

[0002]

2. Description of the Related Art Conventionally used cooling systems for refrigerating warehouses include a cold air circulation system and a ceiling coil system. These schematic elevation views are shown in FIGS. 6 and 7, respectively.

FIG. 6 shows a cold air circulation system, in which a unit cooler 2 is installed in the refrigerating / cooling warehouse main body 1 and stored in the refrigerating / cooling warehouse main body 1 by the cool air forcedly blown out from the unit cooler 2. 3 is to be cooled.
The features of this system are that the stored material 3 can be cooled in a short time and that the stored material 3 can be easily defrosted in a short time in a frozen or refrigerated state in the freezing / refrigerating warehouse body 1.
Moreover, the installation space of the unit cooler 2 is relatively small,
It is also possible to secure a large installation space for the stored items 3 in the refrigerating / freezing warehouse body 1. Further, compared with the case where a cooling coil is installed on the ceiling, the strength of the building can be reduced and the facility cost can be suppressed. Therefore, the method of cooling the refrigerating and refrigerating warehouse body 1 is the mainstream.

On the other hand, in the ceiling coil system, as shown in FIG. 7, a cooling coil, which is a refrigerant evaporation pipe 4, is disposed in the ceiling portion of the refrigerating / freezing warehouse body 1, and the cooling air in the vicinity of the cooling coil is naturally used. The stored material 3 in the refrigerating warehouse body 1 is cooled by convection. Since air is not circulated in the refrigerating / cooling warehouse body 1, there is an advantage that quality deterioration and loss due to drying of the stored material 3 are extremely small, and there is almost no temperature change in the refrigerating / refrigerating warehouse body 1.

[0005]

However, the above-mentioned conventional cooling system has the following problems. First, in the former cold air circulation system, since the cold air directly hits the stored material 3, the quality deterioration and the loss of quality due to the drying of the stored material 3 occur. Therefore, it is a serious problem when refrigerating and storing the stored product 3 such as fruits and vegetables containing a large amount of water without being packaged. Further, since the cold air is forced to circulate in the freezing / refrigerating warehouse main body 1, dust and dirt accumulated in the freezing / refrigerating warehouse main body 1 fly up, and a hygienic problem occurs in the unpackaged stored material 3.

Further, the latter ceiling coil system has a problem that it takes a long time to cool to a predetermined temperature because it is cooled by natural convection. Furthermore, since drain water drips from the cooling coil during defrosting, the stored material 3 may be damaged, and defrosting cannot be performed frequently. Therefore, it is forced to operate under the condition that the heat transfer effect is low in the frosted state, and the cooling effect becomes worse. Further, when the frost is excessively large, a liquid bag is generated in which the liquid refrigerant is returned to the compressor without being completely evaporated in the cooling coil, so that reliability of the compressor is deteriorated, such as a failure of the compressor.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to radiatively cool from the inner wall surface of a refrigerating / refrigerating warehouse and to cool the refrigerating / refrigerating warehouse space by convection under a small wind speed. It is to provide a refrigerating / refrigerating warehouse that keeps the interior space of the refrigerating / refrigerating warehouse uniform and does not damage stored items in the refrigerating / refrigerating warehouse.

[0008]

In order to achieve the above-mentioned object, the present invention has an air passage inside the wall body having a double wall structure as a wall body of a refrigerating / refrigerating warehouse main body for storing a storage object to be frozen or refrigerated. And a means for circulating and blowing the air in the passage are formed, the inner wall surface is formed by a radiant heat transfer plate, and the inner wall surface formed by the radiant heat transfer plate has a suction port and a straightening plate that communicate with the air circulation passage. A cooling air supply means for supplying cold air generated by a refrigerating device in the air passage, the cooling air supply means for cooling the air flowing through the interior space from the outlet. It was configured to perform double cooling by radiative cooling from the inner wall surface. In this case, a heat storage material may be provided on the back surface of the radiant heat transfer plate.

[0009]

According to the above construction, the walls of the refrigerating and refrigerating warehouse are doubled, and the cooling air is circulated between them so that the inner wall surface of the refrigerating and refrigerating warehouse serves as a radiative cooling surface and circulates in the refrigerator interior space. By forming the outlet of the cooling air as the straightening vane, it is possible to circulate the cooling air having a uniform and minute wind speed in the space inside the refrigerating and refrigerating warehouse. As a result, it is possible to enhance the cooling efficiency of the space in the refrigerating and refrigerating warehouse and keep the space in the refrigerating and refrigerating warehouse in a uniform state without damaging the stored items in the refrigerating and refrigerating warehouse.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Specific embodiments of a refrigerating / freezing warehouse according to the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a sectional configuration diagram of a refrigerating warehouse according to the first embodiment. The freezing / refrigerating warehouse main body 10 accommodates the stored items 12 therein, but the wall bodies 14 constituting the four side surfaces, the ceiling, and the floor surface of the warehouse main body 10 are doubled to form a space between the outer wall 16 and the inner wall 18. An air passage 20 is formed in the. In this embodiment, the air passage 20 is divided into upper and lower parts by the warehouse body 10, and a partition plate 22 which is arranged transversely to the air passage 20 is provided at a central height position of the wall body 14. Such a double wall 14
An air blower 24 that blows air to each of the upper and lower air passages 20 is installed inside the, and as shown in the drawing,
It is arranged inside each of the upper and lower passages 20 with the partition plate 22 sandwiched between the one wall surface portion. An air outlet 28 for introducing the air from the air passage 20 into the interior space 26 is formed in the inner wall 18 in the wall surface portion facing the air blower installation wall surface, and a rectifying plate 30 is arranged in the air outlet 28. When the blown air from the blown air is discharged and blown from the air outlet 28, it is rectified and blown. The current plate 30 is formed by a lattice plate or the like in which a large number of small diameter passages are formed.
The ventilation speed of the air blown from the air passage 20 is reduced, and the air can be blown into the internal space 26 in a laminar flow state. An air inlet 32 for the air inside the refrigerator is formed on the wall surface opposite to the wall surface on which the air outlet 28 in which the air flow regulating plate 30 is formed, that is, the wall surface portion on which the blower 18 is installed. Is in communication with.
As a result, the air blown by the blower 18 circulates inside the wall 14 of the warehouse body 10 and is blown to the air outlet 28.
To cross the interior space 26 to circulate in the flow path from the suction port 32 to the suction portion of the blower 18.

On the other hand, a refrigerator 34 is provided outside the warehouse body 10.
And a pair of coolers 36 for circulating the cooling refrigerant are arranged in the upper and lower air passages 20. This cooler 36
Are arranged on the discharge side of the blower 18, and the air from the blower 18 is cooled by heat exchange so that the air flowing through the air passage 20 becomes cool air.

Here, the inner wall 18 forming the air passage 20 is formed so as to be a radiant heat transfer plate which is cooled by the cooling air flowing therethrough and radiates cooling heat to the internal space 26. Therefore, the inner wall 18 is made of a material that is easily cooled and easily radiated, and is formed as a formed radiant heat transfer plate by using a material having a high heat conductivity and a high heat transfer coefficient. Also, to increase the efficiency of radiation cooling,
It may be formed by a thin corrugated metal plate having a large radiation area.

From the above, by blowing the air discharged from the blower 24 through the cooler 36, the cooling air flows through the air passage 20 in the double wall, and the air is cooled from the air outlet 28 provided with the straightening vane 30. The cold storage body 10 has a structure in which the air flows in the internal space 26 of the cold storage warehouse 10 at a uniform and minute wind speed and is sucked into the double wall from the suction port 32. The cooling air is manufactured by circulating the refrigerant cooled in the refrigerator 34 to the cooler 36 via the refrigerant pipe 35, and blowing the air to the cooler 36 by the blower 18 to exchange heat.

Next, operation examples and operations of the embodiment apparatus will be described. In order to produce the cooling air, the refrigerant cooled by the refrigerator 34 circulates in the refrigerant pipe 35 as described above and is sent to the cooler 36. Therefore, the air returned from the internal space 26 of the refrigerating / freezing warehouse body 10 through the suction port 32 exchanges heat with the refrigerant to become cooling air. As described above, the cooling air is supplied to the inside of the wall 14 of the refrigerating / cooling warehouse body 10,
That is, it flows between the outer wall 16 and the inner wall 18, and then the freezing / refrigerating warehouse body 19 is blown from the blow-out port 28 in which the straightening vane 30 is installed.
The air flows in the interior space 26 at a uniform and minute wind speed. At this time, the cooling air circulates between the outer wall 16 and the inner wall 18 of the refrigerating / refrigerating warehouse main body 10, so that the refrigerating / refrigerating warehouse inner space 2
Radiation cooling to 6 and prevention of invasion heat into the refrigerating / refrigerating warehouse body 10 (flow-through heat due to difference in air temperature between the outside air and the space 26 in the refrigerating / refrigerating warehouse or solar heat) are achieved. The radiative cooling is performed by the cooling air cooling the inner wall 18 of the freezing / refrigerating warehouse body 10, and the surface of the inner wall 18 on the side of the freezing / refrigerating warehouse internal space 26 side becoming the radiative cooling surface. In addition, the circulation of the cooling air to the space 26 in the freezing / refrigerating warehouse makes it possible to improve the low cooling efficiency, which was a problem in the radiative cooling. At this time, in the space 26 inside the refrigerating / freezing warehouse, deterioration of the quality of the stored material 12 due to a draft of the cooling air or a drift occurs. Regarding this, by installing a straightening plate 30 at the outlet 28 to the space 26 in the refrigerating and refrigerating warehouse, the cooling air flows through the space 26 in the refrigerating and refrigerating warehouse at a uniform and minute wind speed to store the space 26 in the refrigerating and refrigerating warehouse. It is possible to solve the deterioration of the quality of the object 12.

FIG. 2 is a sectional view of an embodiment showing a freezing / refrigerating warehouse of the second embodiment. The difference from the configuration of the first embodiment is that
The refrigerator 34 and the refrigerant pipe 3 are provided on the ceiling surface of the refrigerating / freezing warehouse 10.
The point is that an evaporation pipe 38 for the refrigerant circulating in 5 is arranged, and the evaporation pipe 38 for the refrigerant is used as an air cooler. This is because the evaporation temperature of the refrigerant is lower than the temperature of the cooling air cooled by the cooler 36, and the temperature difference between the freezing / refrigerating warehouse interior space 26 and the evaporation pipe 38 of the refrigerant is accordingly increased. This is because the cooling effect becomes large. Therefore, the refrigerant evaporation pipe 38 is not only disposed on the back side of the ceiling surface in contact with the ceiling surface, but may also be disposed on the inner side of the ceiling surface, that is, on the space 26 side in the refrigerating / freezing warehouse. . Along with this, the air outlet 28 provided with the current plate 30
Is formed on the ceiling surface, and the suction port 32 is formed on the floor surface.

FIG. 3 is a sectional view showing a refrigerating / freezing warehouse according to the third embodiment. The structure thereof is basically the same as that of the first embodiment. In addition to the structure of the first embodiment, the suction port 3
2 is also provided with a rectifying plate 30. Its action is first
Although the same as the embodiment, the airflow in the freezing / refrigerating warehouse interior space 26 is made more uniform by providing the straightening plate 30 at the suction port 32.

FIG. 4 is a sectional view of a freezing / refrigerating warehouse according to the fourth embodiment. The operation is similar to the other embodiments described above,
In the said 4th Example, especially, the wall body 1 of the freezer-refrigerating warehouse 10
4, in particular, the heat storage material 40 capable of storing cold heat is provided on the inner surface side of the inner wall 18. The heat storage material 40 is preferably a latent heat storage material composed of a substance that changes in phase near the indoor temperature of the freezing / refrigerating warehouse interior space 26 desired by the freezing / refrigerating warehouse 10. Further, the heat load of the freezer-refrigerating warehouse 10 is mainly due to the outside temperature and the solar radiation, and therefore the heat load is smaller at night than during daytime. Therefore, not only the freezing / refrigerating warehouse internal space 26 is cooled at night by using cheap electric power at night, but also cold heat is stored in the heat storage material 40 additionally. Then, when the heat load during the daytime is high, the cold heat stored in the heat storage material 40 is taken out, and the operation of the refrigerator 34 during the daytime can be suppressed. Further, since the heat storage material 40 also serves as a buffer material for cold heat, during the time lag required at the time of starting the operation of the refrigerator 34, the temperature of the space 26 in the refrigerating and refrigerating warehouse can be well adjusted without changing.

FIG. 5 is a sectional view of a freezing / refrigerating warehouse according to the fifth embodiment, in which a cooler 36 attached to a refrigerator 34 is arranged outside the freezing / refrigerating warehouse 10 and is produced outside the refrigerator. The cooling air is supplied to the air passage 20 in the double wall. Since the cooler 36 is installed outside the warehouse, the influence of liquid dripping during defrosting does not affect the stored material 12, so that it is possible to prevent a situation in which the quality of the stored material is deteriorated.

In each of the above embodiments, a temperature sensor and a humidity sensor are arranged in the internal space 26 of the refrigerating / freezing warehouse 10 and, if necessary, a temperature sensor is also provided outside the refrigerator so that the blower 24 blows air. By controlling and adjusting the temperature of the cooling air and cooling air, more precise temperature management becomes possible.
The control means may control the refrigerator 34 and the blower 24, and may appropriately adjust the cooling air temperature and the blown air amount so as to meet preset subconditions.

As shown in FIGS. 1 and 2, the outlets 28 may be located on the left and right wall surfaces, the upper and lower ceilings, or the floor surface. Further, in FIG. 3, the outlet 28 and the inlet 32 are shown.
The freezing / refrigerating warehouse interior space 2
It is also possible to make 6 uniform.

[0021]

As described above, in the refrigerating and refrigerating warehouse according to the present invention, the wall body of the refrigerating and refrigerating warehouse main body for accommodating the objects to be frozen or refrigerated has the double wall structure and the air passage is provided inside the wall body. The inner wall surface is formed by a radiant heat transfer plate, and a suction port and a straightening plate communicating with the air circulation path are formed on the inner wall surface of the radiant heat transfer plate. A cool air supply means for disposing the attached air outlet is provided in the air passage, for supplying cold air generated by a refrigerating device, and air cooling and air flowing through the interior space from the air outlet. Since it is configured to perform double cooling by radiative cooling from the wall surface, it is possible to solve the dilemma of improving cooling efficiency and maintaining the quality of stored items, which cannot be overcome in the past.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram of a freezer-refrigerating warehouse according to a first embodiment.

FIG. 2 is a sectional configuration diagram of a refrigerating / freezing warehouse according to a second embodiment.

FIG. 3 is a sectional configuration diagram of a refrigerating / freezing warehouse according to a third embodiment.

FIG. 4 is a sectional configuration diagram of a refrigerating / freezing warehouse according to a fourth embodiment.

FIG. 5 is a cross-sectional configuration diagram of a freezer-refrigerating warehouse according to a fifth embodiment.

FIG. 6 is a cross-sectional configuration diagram of a conventional refrigerator-freezer warehouse.

FIG. 7 is a cross-sectional configuration diagram of another conventional refrigerator-freezer warehouse.

[Explanation of symbols]

 10 Refrigerating and Refrigerating Warehouse Main Body 12 Stored Material 14 Wall Body 16 Outer Wall 18 Inner Wall 20 Air Passage 22 Partition Plate 24 Blower 26 Interior Space 28 Air Outlet 30 Rectifier Plate 32 Suction Port 34 Refrigerator 35 Refrigerant Pipe 36 Cooler 38 Evaporation Pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Watanabe 1-1-14 Kanda, Chiyoda-ku, Tokyo Inside Hirit Plant Construction Co., Ltd.

Claims (2)

[Claims] 1. A wall body of a refrigerating / refrigerating warehouse main body for accommodating stored objects to be frozen or refrigerated has a double wall structure to form an air passage inside the wall body, and to provide a circulating air blower for the air in the passage. The wall surface is formed of a radiant heat transfer plate, and an inlet port communicating with the air circulation passage and an air outlet port having a rectifying plate are arranged to face each other on the inner wall surface of the radiant heat transfer plate, and Cold air supply means for supplying cold air generated by the refrigerating device is provided in the air passage, and double cooling is performed by air cooling that flows through the interior space from the outlet and radiative cooling from the inner wall surface. Freezing and refrigerating warehouse. 2. The refrigerating warehouse according to claim 1, wherein a heat storage material is provided on the back surface of the radiant heat transfer plate.